The electrochemical dissolution of copper sulfides using a fluidized bed electrochemical reactor

Abstract

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Mechanism of anodic dissolution of chalcocite in hydrochloric acid solution

“…and Mallikarjunan, 1968) and ammoniacal (Hepel and Hepel, 1977) solutions have been studied previously, with the expected production of Cu(II), but chloride solutions have received surprisingly little attention. Felker (1984) found, however, that electrooxidation of chalcocite in a 4 mol/dm3 HC1 solution in a fluidized bed reactor gave univalent copper as the main product, but the reaction was not studied in detail. Cu(I) had previously been postulated to be an intermediate in the anodic dissolution of CuS (Ghali et al, 1982) but was not detected directly.…”